3D Connexion GNS 530(A) manual Emergency Channel, Stuck Microphone, Quickly tuning and activating

Selecting a COM frequency for any airport in the database:

1)Turn the large right knob to select the WPT Page Group.

2)Turn the small right knob to select the Airport Frequencies Page (Figure 2-9).

SECTION 2

COM

Emergency Channel

The GNS 530’s emergency channel select provides a quick method of selecting 121.500 MHz as the active frequency in the event of an in-flight emergency. Emergency channel select is available anytime the unit is on, regardless of GPS or cursor status, or loss of the display.

Quickly tuning and activating 121.500:

Press and hold the COM Flip-flopKey for approximately two seconds (Figure 2-10).

Figure 2-9 Airport Frequencies Page

3)Press the small right knob to place the cursor on the airport identifier field.

4)Use the small and large right knobs to enter the identifier of the desired airport. Press the ENT Key when finished.

5)Turn the large right knob to highlight the desired frequency.

6)Press the ENT Key to place the highlighted frequency in the standby COM Window field.

Figure 2-10 Emergency Channel Active

Stuck Microphone

As mentioned previously in this section, when the GNS 530 is transmitting, a ‘TX’ indication appears in the COM Window. If the microphone key is stuck or accidentally left in the on position; or the microphone continues to transmit after the key is released, the COM transmitter automatically times out (ceases transmitting) after 35 seconds of continuous broadcasting. A ‘COM push-to- talk key stuck’ message (Figure 2-11) is displayed as long as the condition continues.

Figure 2-11 Message Page

190-00181-00 Rev. E GNS 530(A) Pilot’s Guide and Reference 2-5